Police are hunting a man who exposed himself to a woman while armed with a knife.

The incident happened on Friday, May 17 at around 3.10pm, when the female victim was approached on Hackney Marshes.

The suspect held the knife in what police have described as 'a threatening way' and exposed himself to the woman.

The petrified woman screamed and the suspect fled the scene before police officers arrived.

A spokesperson for the Metropolitan Police said: "A short time later, police received further reports of a man, of the same description, continuing to expose himself in the Hackney area.

"The suspect is described as a light skinned black man, aged between 20 and 30 years old.

Police are looking to speak to a man that mets this restriction

"He was wearing a khaki jacket/anorak with the hood up and dark tracksuit trousers. The man possibly wears his hair in braids.

"Anyone who has information concerning the identity of the man is asked to call officers at the Central East Command Unit via 101 quoting reference Cad 4711/17May19, Tweet @MetCC or call Crimestoppers anonymously on 0800 555 111."